<div dir="ltr"><div><div>Thanks for the reply. Unfortunately, simply reducing the air flow isn't going to work. We're looking at both sensible and latent loads within the zone, and reducing the airflow will also reduce the amount of moisture brought in from the outside.<br> <br></div>I need to find a way to precondition my ventilation air without affecting the amount of moisture being brought into the zone. Right now I'm trying to see if I can set up a second zone in my model as the "plant" - the plant zone will bring in exterior supply air at a given flow rate, heat it, and then the main zone will draw all it's ventilation air directly from the plant zone. If I'm understanding this correctly, I can set up the control loop in the plant zone to provide sensible control only, so the air entering the main zone will have the same humidity ratio as the exterior air. <br> <br></div><div>Is this something that anyone has done before? Is there any other way to set up an HRV in ESP-r without explicitly modelling all the heating and cooling equipment within a zone?<br></div><div><br></div>Thanks. <br> </div><div class="gmail_extra"><br><br><div class="gmail_quote">On 3 December 2013 10:09, Jeremy Cockroft <span dir="ltr"><<a href="mailto:jeremy@esru.strath.ac.uk" target="_blank">jeremy@esru.strath.ac.uk</a>></span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div link="blue" vlink="purple" lang="EN-GB"> <div> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Alex, keep it simple, as in this example:<u></u><u></u></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">If your HRV is 80% efficient, and handles, say 100m3/h, then set your ventilation rate at 20m3/h (as this is all that you require to heat, the balance being recovered by the HRV). You may have infiltration as well, as in your base case, to include. This avoids all that pesky plant simulation.<u></u><u></u></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Regards,<u></u><u></u></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Jeremy Cockroft<u></u><u></u></span></p> <p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p> <p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US"> <a href="mailto:esp-r-bounces@lists.strath.ac.uk" target="_blank">esp-r-bounces@lists.strath.ac.uk</a> [mailto:<a href="mailto:esp-r-bounces@lists.strath.ac.uk" target="_blank">esp-r-bounces@lists.strath.ac.uk</a>] <b>On Behalf Of </b>Alex Giroux<br> <b>Sent:</b> 03 December 2013 14:18<br> <b>To:</b> esp-r<br> <b>Subject:</b> [esp-r] Adding HRV to model<u></u><u></u></span></p><div><div class="h5"> <p class="MsoNormal"><u></u> <u></u></p> <div> <div> <div> <p class="MsoNormal" style="margin-bottom:12.0pt">Hi,<u></u><u></u></p> </div> <p class="MsoNormal" style="margin-bottom:12.0pt">I'm looking for information on how to simulate HRVs in ESP-r. <br> <br> I've got a house modelled, and I've run simulations to see what the loads are. I'd like to see how adding an HRV affects the loads on the house.<u></u><u></u></p> </div> <div> <p class="MsoNormal" style="margin-bottom:12.0pt">I can't find any specific information about how to go about doing this though. Can I add in an HRV somehow to a model with an idealized plant, similar to the hybrid mechanical/natural ventilation example in ESP-r? That example has the plants to provide mechanical ventilation to the zones set up as separate zones and then I believe there's an airflow network set up between the different zones, but I think I'm missing some files.<u></u><u></u></p> </div> <div> <p class="MsoNormal">Thanks in advance.<u></u><u></u></p> </div> <div> <p class="MsoNormal"><u></u> <u></u></p> </div> <div> <p class="MsoNormal">Alex Giroux<br clear="all"> <u></u><u></u></p> </div> <p class="MsoNormal"><br> -- <br> Alexandra Giroux, EIT<br> MASc Student<br> Mechanical Engineering<br> University of Waterloo<u></u><u></u></p> </div> </div></div></div> </div> <br>_______________________________________________<br> esp-r mailing list<br> <a href="mailto:esp-r@lists.strath.ac.uk">esp-r@lists.strath.ac.uk</a><br> <a href="http://lists.strath.ac.uk/mailman/listinfo/esp-r" target="_blank">http://lists.strath.ac.uk/mailman/listinfo/esp-r</a><br></blockquote></div><br></div>